Emergent Tetragonality in a Fundamentally Orthorhombic Material

Abstract

Symmetry plays a key role in determining the physical properties of materials. By Neumann's principle, the properties of a material are invariant under the symmetry operations of the space group to which the material belongs. Continuous phase transitions are associated with a spontaneous reduction in symmetry. (For example, the onset of ferromagnetism spontaneously breaks time reversal symmetry.) Much less common are examples where proximity to a continuous phase transition leads to an increase in symmetry. Here, we find an emergent tetragonal symmetry close to an apparent charge density wave (CDW) bicritical point in a fundamentally orthorhombic material, ErTe${}_3$, for which the CDW phase transitions are tuned via anisotropic strain. The underlying structure of the material remains orthorhombic for all applied strains, including at the bicritical point, due to a glide plane symmetry in the crystal structure. Nevertheless, the observation of a divergence in the anisotropy of the in-plane elastoresistivity reveals an emergent electronic tetragonality near the bicritical point.

References in corpus (22)

• Gap symmetry and structure of Fe-based superconductors
• Divergent nematic susceptibility in an iron arsenide superconductor
• Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
• Piezoelectric-based apparatus for strain tuning
• A proposal for reconciling diverse experiments on the superconducting state in Sr2RuO4
• Theory of stripes in quasi two dimensional rare-earth tritellurides
• Emerging superconductivity with broken time reversal symmetry inside a superconducting $s$-wave state
• Wave vector dependent electron-phonon coupling drives charge-density-wave formation in TbTe3
• Sixfold enhancement of superconductivity in a tunable electronic nematic system
• Drastic suppression of superconducting $T_c$ by anisotropic strain near a nematic quantum critical point
• Superconducting state of Sr${}_2$RuO${}_4$ in the presence of longer-range Coulomb interactions
• Spontaneous breaking of isotropy observed in the electronic transport of rare-earth tritellurides
• Competing soft phonon modes at the charge-density-wave transitions in DyTe${}_3$
• Symmetry constraints on the elastoresistivity tensor
• Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements
• Higher angular momentum pairings in interorbital shadowed-triplet superconductors: Application to Sr${}_2$RuO${}_4$
• Measurement of the $B_{1g}$ and $B_{2g}$ components of the elastoresistivity tensor for tetragonal materials via transverse resistivity configurations
• Rigid platform for applying large tunable strains to mechanically delicate samples
• Multiple Charge Density Wave States at the Surface of TbTe${}_3$
• Measurement of Elastoresistivity at Finite Frequency by Amplitude Demodulation
• Elastoresistive and Elastocaloric Anomalies at Magnetic and Electronic-Nematic Critical Points
• Emergent ${\mathbb{Z}}_2$ symmetry near a CDW multicritical point

Cited by in corpus (7)

• Elasto-Hall conductivity and the anomalous Hall effect in altermagnets
• Atomic-Scale Visualization of a Cascade of Magnetic Orders in the Layered Antiferromagnet $GdT{e}_3$
• Uncovering the Hidden Ferroaxial Density Wave as the Origin of the Axial Higgs Mode in RTe${}_3$
• Ultrafast measurements under anisotropic strain reveal near equivalence of competing charge orders in TbTe${}_3$
• Versatile multi-q antiferromagnetic charge order in correlated vdW metals
• Evolution of charge-density-wave soft phonon modes in ${\mathrm{Pd}}_x{\mathrm{ErTe}}_3$
• Energetically Favored One-Dimensional Moiré Superstructure in the Pseudo-Square Lattice GdTe3